Betting Calculators

All Betting Calculators & Sports Betting Probability

Fair Odds

Ev Calculator

Arbitrage

Implied Probability

Kelly criterion

Middle Bet

Qualifying Bet Calculator

Betfair Bonus Turnover Calculator

Fair Odds Calculator

Bookmakers don't offer fair prices. Every market they set includes a built-in margin that tilts the odds in their favour. The fair odds calculator removes that margin, showing you the fair odds for each selection.

Fair Odds Calculator

Expected Value Calculator

Use this expected value (EV) calculator to determine the average amount you can expect to win or lose on the same bet.

Expected Value Calculator

Use this expected value (EV) calculator to determine the average amount you can expect to win or lose on the same bet.

Arbitrage Calculator

Bookmakers don't always agree on the odds. When they don, you can tur the discrepancy into profit. The arbitrage calculator finds the exact stakes you need to place so you walk away with a guaranteed profit, no matter the outcome of the game.

Implied Probability Calculator

The implied probability calculator translates those bookmaker odds into a percentage, showing you exactly what probability the bookmaker has assigned to any outcome. Enter the decimal odds, and the tool does the conversion instantly.

Kelly Criterion Calculator

Knowing a bet is +EV is one thing. Knowing how much to stake on it is another. The Kelly Criterion calculator solves the second problem by working out the exact percentage of your bankroll to wager on any bet based on your edge, so you grow your bankroll as efficiently as possible without taking on unnecessary risk.

Middle Bet Calculator

The middle bet calculator helps you work out exactly what to stake on the other side to maximize profit potential and minimize losses.

Qualifying Bet Calculator

Most bookmaker promotions require you to place a real cash bet first to unlock the bonus. That qualifying bet is the part that exposes you to risk, and the qualifying bet calculator works out exactly how much to lay on Betfair to minimise your downside while you wait for the bonus to drop.

Betfair Bonus Turnover Calculator

Turnover your bonus bets with Betfair to guarantee a return. The bonus bet conversion calculator works out exactly how much to lay on Betfair to extract guaranteed profit from any bonus bet, regardless of the result.